[Qemu-devel] [Bug 1399957] Re: Strange colors on PowerMac Machine OsX

[luigiburdo]

PMM i found the problem it is because big endian sdl and was fixed in some 
other programams with this 
like i write before on  8 bit std no problem when i swap to 16 bit and up i 
have wrong colors.

            /* The MacOS X port of SDL lies about it's default pixel format
             * for high-colour display. It's always R5G5B5. */


Here a code example :


#ifdef WORDS_BIGENDIAN
    if (fmt->BitsPerPixel == 24) {
        if (fmt->Rmask == 0x00FF0000 && fmt->Gmask == 0x0000FF00 && fmt->Bmask 
== 0x000000FF)
            return RGBFB_R8G8B8;
        if (fmt->Rmask == 0x000000FF && fmt->Gmask == 0x0000FF00 && fmt->Bmask 
== 0x00FF0000)
            return RGBFB_B8G8R8;
    } else if (fmt->BitsPerPixel == 32) {
        if (fmt->Rmask == 0xFF000000 && fmt->Gmask == 0x00FF0000 && fmt->Bmask 
== 0x0000FF00)
            return RGBFB_R8G8B8A8;
        if (fmt->Rmask == 0x00FF0000 && fmt->Gmask == 0x0000FF00 && fmt->Bmask 
== 0x000000FF)
            return RGBFB_A8R8G8B8;
        if (fmt->Bmask == 0x00FF0000 && fmt->Gmask == 0x0000FF00 && fmt->Rmask 
== 0x000000FF)
            return RGBFB_A8B8G8R8;
        if (fmt->Bmask == 0xFF000000 && fmt->Gmask == 0x00FF0000 && fmt->Rmask 
== 0x0000FF00)
            return RGBFB_B8G8R8A8;
    } else if (fmt->BitsPerPixel == 16) {
        if (get_sdlgfx_type () == SDLGFX_DRIVER_QUARTZ) {
            /* The MacOS X port of SDL lies about it's default pixel format
             * for high-colour display. It's always R5G5B5. */
            return RGBFB_R5G5B5;
        } else {
            if (fmt->Rmask == 0xf800 && fmt->Gmask == 0x07e0 && fmt->Bmask == 
0x001f)
                return RGBFB_R5G6B5;
            if (fmt->Rmask == 0x7C00 && fmt->Gmask == 0x03e0 && fmt->Bmask == 
0x001f)
                return RGBFB_R5G5B5;
        }
    } else if (fmt->BitsPerPixel == 15) {
        if (fmt->Rmask == 0x7C00 && fmt->Gmask == 0x03e0 && fmt->Bmask == 
0x001f)
            return RGBFB_R5G5B5;
    }
#else
    if (fmt->BitsPerPixel == 24) {
        if (fmt->Rmask == 0x00FF0000 && fmt->Gmask == 0x0000FF00 && fmt->Bmask 
== 0x000000FF)
            return RGBFB_B8G8R8;
        if (fmt->Rmask == 0x000000FF && fmt->Gmask == 0x0000FF00 && fmt->Bmask 
== 0x00FF0000)
            return RGBFB_R8G8B8;
    } else if (fmt->BitsPerPixel == 32) {
        if (fmt->Rmask == 0xFF000000 && fmt->Gmask == 0x00FF0000 && fmt->Bmask 
== 0x0000FF00)
            return RGBFB_A8B8G8R8;
        if (fmt->Rmask == 0x00FF0000 && fmt->Gmask == 0x0000FF00 && fmt->Bmask 
== 0x000000FF)
            return RGBFB_B8G8R8A8;
        if (fmt->Bmask == 0x00FF0000 && fmt->Gmask == 0x0000FF00 && fmt->Rmask 
== 0x000000FF)
            return RGBFB_R8G8B8A8;
        if (fmt->Bmask == 0xFF000000 && fmt->Gmask == 0x00FF0000 && fmt->Rmask 
== 0x0000FF00)
            return RGBFB_A8R8G8B8;
    } else if (fmt->BitsPerPixel == 16) {
        if (fmt->Rmask == 0xf800 && fmt->Gmask == 0x07e0 && fmt->Bmask == 
0x001f)
            return RGBFB_R5G6B5PC;
        if (fmt->Rmask == 0x7C00 && fmt->Gmask == 0x03e0 && fmt->Bmask == 
0x001f)
            return RGBFB_R5G5B5PC;
    } else if (fmt->BitsPerPixel == 15) {
        if (fmt->Rmask == 0x7C00 && fmt->Gmask == 0x03e0 && fmt->Bmask == 
0x001f)
            return RGBFB_R5G5B5PC;
    }
#endif

    return RGBFB_NONE;
}
#endif

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https://bugs.launchpad.net/bugs/1399957

Title:
  Strange colors on PowerMac Machine OsX

Status in QEMU:
  New

Bug description:
  Strange colors on PowerMac Machine OsX
  if it used VmWare or Std i have strange color palette as result.
  I had benn made a grab of screen here 

  http://i1249.photobucket.com/albums/hh511/tlosm/qyellow_zps1d2dfc18.jpg

  My Machine is a PowerMac G5 Quad with Nvidia 7800Gtx 512mb

  thankyou
  Luigi

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